VEGA VEGASON 71 - 1 … 75 - 1 - Manual (Page 49)

Supplementary optimizations
71 - 1 … 75 - 1 49
Basic adjustment MODE 1 - 27
All parameters, the data of which had been modi-
fied during start-up or sensor optimization, can be
reset to the factory preset if necessary. Note:
-
the data of the false echo memory determined in
mode 17 is not detected
- switching to the basic adjustments triggers a
new start-up condition
- the fail safe relay de-energizes
Result:
-
the display indicates for approx. 3 secs. CAL
(flashing)
- all modes of sensor optimization 1 or 2 are reset
to factory preset (see protocol page 49)
- the respective sensor starts operating, therefore
the fail safe relay de-energizes and the failure
LED lights
- CAL extinguishes after approx. 3 secs. and the
figures 0.000 are indicated
- this means that the basic adjustment is activated
- acc. to the time schedule a measurement is indi-
cated or the measuring system repeats its oper-
ation (
E2.01 ) using the basic adjustment (factory
preset)
Programming example ........................................... • select mode 1 - 27 in MODEFIELD
• in PARAMETER FIELD change the figure 0 in
figure 1 (prepare basic adjustment for activation)
• then store with STO-button the basic adjustment
Real distance MODE 1 - 25
As described before, all echoes within the measur-
ing window are evaluated (useful and false echo).
Therefore the measuring window can position on a
false echo for different reasons. The cause is a
false measurement.
In these cases an actual value can be defined by
correction of the distance, i.e. by positioning the
measuring window correctly and updating the
measurement. To avoid repetition it is useful that
the respective optimizations are carried out, e.g.
Preventive optimizations
-
angle of repose adapted (mode 1 - 10)
- particle size adapted (mode 1 - 11)
- start false echo learn (mode 1 - 17)
- switch on profile interpolation (mode 1 - 18)
- adjust rate of product level change very precisely
(mode 1 - 19)
Procedure
-
determine the actual distance to the product
surface (e.g. dip etc.).
- program this value in mode 1 - 25
With reducing level a build-up of e.g. 10 m is
detected and evaluated. The actual level however
is lowered to 23 m.
Programming example .......................................... • select mode 1 - 25 in MODEFIELD
• program the real distance of 23.00 (real echo) in
PARAMETER FIELD
• then store with STO-button